I made this hook to replace broken hooks on my wire shelving. The original hooks had the drywall anchors as part of the hook, which is fine when you are installing hooks and can line up all of your marks to coincide with the particular offset of the anchor to the shelf but that's kind of hard to match when those particular anchors no longer exist. With this anchor, all you need to do is place it where you want to and run the screw through the hole, then remove it and place the drywall anchor of your choice where the screw went in... simple!